The use of stone coal powder

Stone coal refers to coal containing a large amount of minerals, which looks like black rock and has a low calorific value. It can be used as fuel, etc. China has abundant stone coal resources, which are mainly utilized for power generation, vanadium extraction, and use in the building materials industry.
Stone coal power generation
Stone coal is a mixture of organic carbon and inorganic elements, which has a certain heating capacity. However, due to the low carbon content and high ash content of stone coal. Bringing certain difficulties to combustion. After simple flotation, stone coal can remove most of the ash and be used as anthracite. A small amount of binder can also be added to make shaped coal for civil or industrial boilers. With the improvement of processes and breakthroughs in technological difficulties, the combustion of stone coal for power generation in fluidized bed furnaces and circulating fluidized bed boilers has been put into commercial development. Therefore, stone coal as an energy source can not only be used in general industrial boilers, but also for power generation in power plants.
Vanadium extraction from stone coal
Vanadium is a trace element. It is the raw material for smelting high-quality alloy steel and various nonferrous alloys. It is also widely used in aerospace and chemical industries. As early as the early 1970s, vanadium pentoxide was extracted using the stone coal soil method in places such as Yangjiabao in Hubei and Yiwu in Zhejiang. Several vanadium extraction plants have also been established in Zhejiang, Hunan, Hubei and other provinces to carry out small-scale vanadium extraction production. After the exploration work in Yushan and Shangrao, Jiangxi Province is conducting feasibility studies.
Building materials industry
Stone coal and stone coal power generation waste can be used for burning cement, bricks and tiles, flat tiles, hollow blocks, etc. Due to the fact that some stone coal generally contains 0.00n% -0.0n of radioactive uranium, the uranium in the waste residue after combustion may be locally enriched, and the radioactive radiation seriously exceeds the standard. It is recommended not to use stone coal waste residue as building materials in general civil buildings. When used in general buildings, it is also necessary to determine whether the radiation exceeds the standard.
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